Never used it before, it's formulated about the same as most of them, with the added "benefit" of the accuration feed limiter.
I gave there hi fat accuration tubs a try last year because my feed man gave a pretty good deal on them. My cows were on hay, and got these tubs for supplement. They did maintain condition, but as to if they actually ate less hay, I could not give a solid yes, or no. But last year was a very nasty winter, and maybe if they were on forage it might of made a difference in consumption.
Price out your options and see what works for you.